Hinge last



June 4, 1929. T 1,715,594

HINGE LAST Filed May 15, 1928 Z Fig.2 V

Patented June 4 1929.

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' HINGE LAST.

Application filed May 15,

. This invention refers to hinge lasts.

There is a considerable demand'in the trade for a hinge last which willbe impositively locked in both extended and collapsed position, that is,which can be moved by pressure from one position to the other, but willnot of itself tend to move from one position to the other, and at leastrequires a considerable pressure to move it from extended position.

All such lasts heretofore furnished to the trade have been subject tovarious disadvantages. Either the spring, which is a neces sarycomponent of the impositive locking means, has been located so high inthe forepart of the last thatthe thin cone or instep portion of theforepart was unduly weakened,-

or, on the other hand, the lasts in which the spring was inserted in thelower thicker por .tion of the forepart have been very complicated andexpensive. I

It is an important object of the-present in vention to provide alast ofthe type described which shall obviate those and other disadvantages Tothis end I have provided a last in which the heelpart and forepart areconnected by two simpleflat links lying one above the other with aspring-pressed plunger co operating with a notch or cam surface on thelower link to hold the last impositively'in either extended or collapsedposition. The spring is thus located in the lower part of the last wherethere is room for it,'.and the link structure is cheap and strong andhas'proven very eflicient in use.

This and other features of the invention will be better understood fromthe following description of a preferred embodiment thereof illustratedin the drawings, in which Fig. 1 shows the last in extended position,and

Fig. 2 shows the last in collapsed position. In the last illustrated theforepart 10 and heelpart 12 are separated by a cut of any convenientformation, though preferably having a substantially horizontal shoulder14 on the forepart extending into the heelpart to aline the last partsproperly and to prevent relative V twisting in use. The last parts areunited by a lower link 16 anchored in the heelpart and forepart,respectively, by hinge pins 18,20, and by an upper link 22 similarlyanchored by hinge pins 24, 26. These links are located I thus holdingthelast in pin 20 than 1928. Serial No. 278,005. A

above the other, so that the amount of wood removed is minimized.

The lower link 16- has a notch or cam surface 28 on its front endcooperating with a pin 30 which. is impelled rearwardly by a 7 spring 32in a hole 34 in the forepart 10.;

tion. In the collapsing movement, which is pressure alone, the links andheelpart turn upwardly and the notch 28 rides accomplished by over'thepin 30, which comes to rest onthe end surface of the link 16 above thenotch, collapsed position by by the insertion of the I friction'and,with the form of link shown, by

a slight resilient cam action, 'end'of the notch 28 is a little fartherfrom the I the, adjacent end surface of the link 16.

The illustrated bondingimechanism comsince the upper prising thetwo flatlinks 16, 22 and the shoul der 14; make the last very strong inresisting twisting stresses. The amount of wood re moved to permit theinsertion of the hardware is reduced to a minimum and the last isthereby weakened very little by it.

- Having thus described myinv'ention, what I claim as newand desire tosecure by Letters Patent of the United States is n .1. A hinge lastcomprising a heelpart and a forepart'havinga substantially horizontalshoulder on its'rear face projecting into a corresponding depression inthe front face of the'heelpart, the said last parts having kerfs intheir meeting faces, two flat links located one directly abovethe otherin the kerfs and each hingedly pinned into each last part, the

lower link being located in the lower half of the last and having acamfsurface on one of its ends, and a spring-pressed plunger locatedbelow the center i which the cam-surfaced link-end is connected andcooperating with .the' said link-end to extended positions.

2. A hinge last comprising a heelpart and ofthe lastpart to loo ""holdthe last impositively'in' colla d and Cl I directly above theother inthe kerfs and each hingedly pinned into each last part, .thelower linkbeing located in the lower half of the I last'and having a cam surfaceon its front end, the forepart having a hole located below its centralaxis, and a spring-pressed plunger located in the hole and cooperatingWith'the 10 cam-surfaced end of the lower link vto hold the lastimpositively iii-collapsed and extended positions. I p In testimonywhereof I have signed my name to this specification.

Y B. FIT Z.

